Heres what our converter (Intelipower PD9200 series) manual says;
When operating normally, the output is a nominal 13.6VDC
If the converter senses the battery drops below "a preset voltage level", it goes into boost mode and increases output to 14.4 VDC.
If there is no significant battery usage for about 30 hours the converter goes into storage mode. Dropping the output voltage to 13.2VDC (for minimal water usage). When in this mode, the microprocessor increases the voltage to 14.4VDC for 15 minutes every 21 hours.
Hope that helps.
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